Improvement in let-offs for looms



Patented Aug. 15, 18.65;'

H. FISKE.

Let-0H' for Looms.

durin g the weaving process.

"UNITED STATES 1 HoRATIo FIsKE, or FARNUMsvILLE, MAssAoHUsnTrs, Assrenon To HIM. SELF AND ALFRED MORSE, orsAii/ie` PLAGE," i

Specification forming part of Letters Patent No. 49,472, dated August 1865.` I t To all whom it may concern Be itknown that I, HORA'rro FIsKE, of Farnumsville, in the cou nty of Worcester and` State of Massachusetts, have invented 'a new and` useful Improvement in Looms for Weaving Cloth; and I do hereby declare the same to be fully described in the following specification and 'represented in the acconipanyingdraw,

ings, of Whichi i Figure l is aside elevation of a loom-frame i and my invention connected therewith;` Fig,

In carrying out my invention `I employ a positive motion, or mechanism to effect the rotary motion of the cloth-beam, and in con# nection therewith and theyarn-beam I use not only a mechanism to produce the rotation of the latter, in order to cause it to deliver yarn,

buta mechanism bythe operation of which the delivery ofyarnby the yarn-beam will bearrest` 1 ed at such times when it may notbe necessary` i for such delivery to take placeJmWhen, ineoni sequence of a necessity for delivery of the yarn, `the tension on it may be increased by the draft of the `cloth-beam, such increase of ten`sion`,;act ing through and ou the cloth-beam, willcause themechanism for revolving the cloth-roller ltoy be thrown into engagement with` thattfor `moving the yarnbeam,and in consequence i thereofto give motion `to the yarnbeam, so `as sfto cause it to deliver yarn. o

l ficient. delivery of such yarn may havectaken i `placethetension ofthe `warps willhavebeen reduced to such a degreeastojenablea spring .i `to operate and cause the disengagement of the .f

i Ayarn-beam rotative mechanism withthe shaft `for putting it in rotation, in which ease the rotary motion and deliveryof the yaru-beamwill cease, and will not againtake place until there may be another and suflicient increase of tension of the yarn. Inthe drawings, A

denotes the loom-frame;

As soonf as asuf- B the breast-beam. TBl `is the cloth-beamy the cloth-roller onwhich thecloth is wonndby i the cloth-beam. DpistheEyarn-beam,feach of such beams beingacylinder, so as tobe capablefot eing ,theframe f f o y, The positive motion gonmechan infor el'ect ing an intermittent `rotation ofythe elo (about which and theclothy-rollerthec t to be carried in amauner wellknown and u derstood by fweaveI'jS) may bethus desc d Along one sideot the `doom-frame' ashaf E is .arranged horizon ,llyyorythereab t, y said shaft being supportedat `one journal, a, extendingthrough abeari g, jectin g from the loom-frame.i, he shaft ther supported h'ya` statiouaryfand shaft, F, whchlprojectsfrom abracke `ened to the loom-frame,fand is arrange centrically Withthe shaftE. ',lliesaid s :w y projects `in, opposite d' y manner as showninyF y f y ratehe G, xed-on the shaftlE n impelling-pa 'H `carried by a crank, l,

y `ojeeting"f rointh y ay crank-shaft, so'` engages with"` the `ratchet` as to impart to itvfromlthe layrotary motion, which transferred to the s `be practically atre takesplace, moti o o ,y y

,ratchet and "theshaft-Enduring h thro the shuttle.` y `A worm orlscrew, shaft E, engages withva wormby a shaft, N, onwhose inn `ai pinionfO, whichze w Fig. n isa section;`

` a vholemade inhthe gear "By sliding ment Withyitsworm."

The next part of my invention to bedescribed is as follows: tubular shaft, S, encompasses a portion of the stationary tubular shaft F, and slides freely thereon, and carries a worm or screw, T, and a clutch-wheel, d, the

latterbein g to engagewith a similar and fel-R 1 slideror on a screw, fm,made thereon. The

worm T yengages witha worm-gear, U, which is carriedby a shaft, V, and is applied thereto in the same manneras the worm M is applied to the shaft N-that is to say, so that by drawing forward the gear U it may be moved out of enga-gement with its wormll. A pinion,

- X, xed on the shaft V engages with a gear, Y, fixed onthe shaft of the yarn-beam'. Each of the shafts N and V is supported in and by a suitable bracket, Z, fixed to the loom-frame,

Fig. 6 is a vertical section taken through the shaft V, the worm-gear U, the worm T, the frame X, and the gear Y. j

y From the above it will be seen that when it f may be necessaryrfor the yarn-beam to deliver Ithe warp the increased tension of the warp,

acting through the yarn-beam, the gears Y X,

the shaft V,`the yworm-gear U, and the worm T, willcause the worm-gear shaft S to be moved! so as to overcome the pressure of the r spring lc and eect an engagement of the clutchwheels, and thereby cause the said shaft to be r revolved by the shaft E. Such a movement of the shaft S will create a rotary motion ofthe yarn-beam, by which the warp will be delivered therefrom v until the reacting power of the f'fspring k may be relieved, so as to create ka dis; engagement of the clutch-wheels, which having taken place, the motion of the yarn-beam will be arrested.

f By means of the nut Z and screw m of the slider g the spring 7c may be contracted so as to increase its reacting power, and as a matter of course theteusion on the warp. Thus means of the said nut and screw applied with -mechanism, as described, the said tension may p be either increased or diminished as circum-,i`

stances may require. f y.

By the employment of the stationary tubular shaft F, in connection with the drivin g-shaft E and the worm-shaft S, the latter shaft willI be prevented from beingrevolved by the fric# tion of the driving-shaft. Were the tubular l worm-shaft placed directly on and concentrically with the said driving-shaft, without any intermediate stationary tubular shaft, the driving-shaft while revolving would be liable at times to generate friction sufficient to cause it to lput the worm-shaft in revolution, and thus create an improper delivery of the yarn, all of which is prevented bythe employment of the stationary tubular shaft arranged between the shafts E and S, and concentrically with them.

In case it may be desirable to slacken the..

warp at any time for any purpose, we have only to draw either of the worm-gears forwardon its shaft, so as to disengage such worm-gear from its screw or worm. This havingbeen accomplished, the beam next to such worm-gear (whetherit be the cloth-beam or the yarn-beam) will be free to be moved so as to slacken the warp.

Having thus described my invention, what I claim as constituting the same is as follows, viz: Y

1. The combination of the positive motion or mechanism for effecting the regular intermittent rotary motion of the cloth-beam, such consisting ofthe shaft E, machinery for rotating in manner as described, the screw L, the worm-gear M, the-shaft N, the pinion O, and the gear P, or their mechaniealequivalents,

and the mechanism by which the yarnbeainis caused to deliver warp and to remain at rest under circumstances as set forth, such being the clutch-wheels d e, the shaft S, the worm T, the slider g, its retracting-spring and standard 0r their equivalents, the gear-U, the sha-ft V, the pinion X, and the gear Y.

2. The combination of the nut l and the screw m, or their mechanical equivalent or equivalents, with the said positive motion or mechanism of the cloth-beam, and with the said mechanism by which the yarn-beam is caused to deliver warp and to remain at rest under circumstances as set forth. 3. The combinationrof the stationary tubular shaft F with the aforesaid positive motion or mechanism of the cloth-beam, and with the said mechanism by which the yarn-beam is caused to deliver warp and remain at rest under circumstances as set forth.

4. In connection with the said positive motion or mechanism of the cloth-beam, and with the aforesaid mechanism by which the .yarnbeam is caused to deliver warp and-remain at rest under circumstances as specified, the

application vofy each or either of the wormgears to its shaft in such manner as to enable such worm-gear not onlyl to maintain its connection with theshaft so as to be revolved by it, but also to be moved on its shaft relatively to its screw, in manner and for the purpose of disengaging the said worm-gear and screw, as specified.

5. The combination consisting of the clutchwheels d e, the shaft S, the worm T, the slider g, its retracting-spring 7c and standard t", the

gear'U, the shaft V, the pinion X, and the gear Y, or their equivalents, thelwhole being applied to the cloth-beam andoperatedby means and -for the purpose substantially as above specified. f

HORATIO FISKE.

Witnesses:

ALFRED MoRsE, F. P. HALE, Jr. 

